题目内容：
You _________be too cautious when you are driving especially on the freeway.
A．can' t B．needn' t C．mustn't D．won't
参考答案：【答案仅供学习，请勿对照自行用药等】
答案解析：
选择题：You _________be too cautious when you are driving especially on the freeway.A．ca
- 题目分类： 英语学科知识与教学能力
- 题目类型：选择题
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